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Pitch 3.5mm Relay DPDT FRT5 narrow footprint Finder 32.21-x000 Relay, SPDT, High Capacity, https://omronfs.omron.com/en_US/ecb/products/pdf/en-g2rl.pdf Omron Relay SPDT Finder 40.11, https://www.finder-relais.net/de/finder-relais-serie-40.pdf Relay DPDT Finder 96.12 56.32 package for Osram SFH9x0x series of reflective photo interrupter SMD PhotoDiode, plastic SMD SmatDIL Resistor, LDR 5x4.1mm, see http://cdn-reichelt.de/documents/datenblatt/A500/A90xxxx%23PE.pdf Resistor, LDR 5.1x3.4mm, see http://yourduino.com/docs/Photoresistor-5516-datasheet.pdf Sharp OPIC IS471F, see http://pdf.datasheetcatalog.com/datasheet/Sharp/mXvrzty.pdf Sharp OPIC, IS485, IS486, see http://microrato.ua.pt/main/Actividades/Estagios/Docs/IS485_6.pdf Sharp OPIC IS471F, see http://pdf.datasheetcatalog.com/datasheet/Sharp/mXvrzty.pdf Sharp OPIC, IS485, IS486, see http://microrato.ua.pt/main/Actividades/Estagios/Docs/IS485_6.pdf Sharp OPIC IS471F, see http://pdf.datasheetcatalog.com/datasheet/Sharp/mXvrzty.pdf Sharp OPIC, IS485, IS486, see http://microrato.ua.pt/main/Actividades/Estagios/Docs/IS485_6.pdf Sharp OPIC IS485 IS486 package for Vishay CNY70 refective photo coupler/interrupter Vishay CNY70 refective photo coupler/interrupter Vishay CNY70 refective photo coupler/interrupter Vishay CNY70 refective photo coupler package for Osram SFH9x0x series of boards, https://learn.adafruit.com/adafruit-feather-32u4-radio-with-rfm69hcw-module Adafruit Feather 32u4 RFM Footprint for Mini-Circuits case YY161 (https://ww2.minicircuits.com/case_style/YY161.pdf Footprint for Mini-Circuits cas HZ1198 (https://ww2.minicircuits.com/case_style/HZ1198.pdf) following land pattern PL-236, including GND vias (https://www.minicircuits.com/pcb/98-pl176.pdf Footprint for the arrow's head size. Engraved_indicator_head_scale = 2.1; // Scale factor for the Adafruit Feather M0 Wifi Footprint for Mini-Circuits case QQQ130 (https://ww2.minicircuits.com/case_style/QQQ130.pdf) following land pattern drawing: https://ww2.minicircuits.com/pcb/98-pl225.pdf Footprint for Mini-Circuits case CD636 (https://ww2.minicircuits.com/case_style/CD636.pdf) following land pattern drawing: https://ww2.minicircuits.com/pcb/98-pl094.pdf Footprint for Mini-Circuits case HF1139 (https://ww2.minicircuits.com/case_style/HF1139.pdf) following land pattern PL-176, including GND vias (https://www.minicircuits.com/pcb/98-pl176.pdf Footprint for the arrow's shaft size. // How much horizontal space needed for left-hand and right-hand sub-panels left_panel_width = 12.5*3 + tolerance*4 + 8; //three knobs plus space between them left_panel_spacing = (left_panel_width) / 2.5; slider_spacing.

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